Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 669 [Rate centres in NPA 669] [Dial plan for NPA 669]

NXX: 348

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
669-348 A Sunnyvale CA SNJUCACL7MD  965H FRACTEL, LLC 722      
669-348 0 Sunnyvale CA   073H TELNYX LLC 722   2021-02-25   
669-348 1 Sunnyvale CA   5562 METROPCS, INC. 722   2021-03-14   
669-348 2 Sunnyvale CA   649C ONVOY, LLC - CA 722   2022-02-27   
669-348 3 Sunnyvale CA   649C ONVOY, LLC - CA 722   2022-04-01   
669-348 4 Sunnyvale CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-05-26   
669-348 5 Sunnyvale CA   649C ONVOY, LLC - CA 722   2022-04-01   
669-348 6 Sunnyvale CA   965H FRACTEL, LLC 722   2021-01-08   
669-348 7 Sunnyvale CA   624H ONVOY SPECTRUM, LLC 722   2025-05-16   
669-348 8 Sunnyvale CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-08-26   
669-348 9 Sunnyvale CA   515J IP HORIZON LLC 722   2021-05-05   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.